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-rw-r--r--pygments/lexers/haskell.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/pygments/lexers/haskell.py b/pygments/lexers/haskell.py
index 1a2f2217..e3604ed8 100644
--- a/pygments/lexers/haskell.py
+++ b/pygments/lexers/haskell.py
@@ -677,10 +677,10 @@ class KokaLexer(RegexLexer):
symbols = r'[$%&*+@!/\\^~=.:\-?|<>]+'
# symbol boundary: an operator keyword should not be followed by any of these
- sboundary = '(?!'+symbols+')'
+ sboundary = '(?!' + symbols + ')'
# name boundary: a keyword should not be followed by any of these
- boundary = '(?![\w/])'
+ boundary = r'(?![\w/])'
# koka token abstractions
tokenType = Name.Attribute